λ
Sigma Notebook

1,385,890

2 × 5 × 11 × 43 × 293
Abundant Even Composite

1,385,890 is even and not a perfect square. Its factorization is 2 × 5 × 11 × 43 × 293 and its 32 divisors sum to 2,794,176.

Prime Factor Structure

Factorization String 2 × 5 × 11 × 43 × 293
Distinct Prime Factors 5
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 2,794,176
Proper Divisor Sum 1,408,286
Digit Sum / Digital Root 34 (Root: 7)
Adjacent Primes #1385887 ← → #1385893

Radix Representation

Decimal 1385890
Binary 101010010010110100010 (21 bits)
Octal 0o5222642
Hexadecimal 0x1525A2

Divisor Catalog (32)

Collatz Trajectory (75 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

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